用用于过滤 and/or 链式延迟对象的工具方法。
Bind an event handler to the "error" event, or trigger that event on an element.
Bind an event handler to the "load" event, or trigger that event on an element.
绑定两个或多个处理程序绑定到匹配的元素,用来执行在交替的点击。
Bind an event handler to the "unload" event, or trigger that event on an element.